Note that if there is one vampire number (and there is),
then we have an infinite number of vampire numbers.
Proof: Suppose V = n * m is a vampire number. Then
10 * V = (10 * n) * m is a vampire number as well. qed.

When putting a smiley right before a closing parenthesis, do you:

Use two parentheses: (Like this: :) )
Use one parenthesis: (Like this: :)
Reverse direction of the smiley: (Like this: (: )
Use angle/square brackets instead of parentheses
Use C-style commenting to set the smiley off from the closing parenthesis
Make the smiley a dunce: (:>
I disapprove of emoticons
Other